If "pristine" just fenders should be worth $350 ea.
they fit whereas the aftermkt for $350 plus dont...
Bumper if in "pristine" shape chromewise should be $250? the grills too would bring money... depending on if 350 hood or 400 hood it could be worth $75-300
You can check prices for all the parts involved , like headlight area, V filler etc, and if good parts they should bring at least what aftermkt would...

now, like FBody says , what he calls "pristine" may not be what you think it is...